An Efficient Asymmetric Synthesis of Tarchonanthuslactone.

Abstract

An Efficient Asymmetric Synthesis of Tarchonanthuslactone. -Key steps of the new asymmetric synthesis of tarchonanthuslactone (X) are the enzymatic transformation of diketo ester (I) to lactone (II) in excellent stereoselectivity, and the construction of the tarchonanthuslactone skeleton (IX) by an umpolung technique. -(ENDERS*, D.; STEINBUSCH, D.; Eur.